It swayed violently in a strong wind. Its roadway was damaged by vehicles. Its access was blocked by many people.
它在强风中剧烈摇晃。车辆损坏了道路。许多人堵住了通道。
Due to the increase in access space, the stress concentration state of roadway is improved and the stability of extraction opening is increased.
大间距无底柱由于加大了进路间距,改善了巷道的应力集中状态,提高了回采巷道的稳定性。
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